Janowski starting position
Black plays 3...a6 before committing the kingside pieces. The point is practical: if White ignores it, Black may capture on c4 and use ...b5 to keep the pawn.
Example sequence: d4 d5 c4 e6 Nc3 a6
QGD Janowski Variation: 3...a6 Plan Map
The Janowski Variation starts with 1.d4 d5 2.c4 e6 3.Nc3 a6. Black threatens ...dxc4 followed by ...b5, so White usually plays 4.cxd5 first and then chooses between Bf4, Nf3/Bg5, Qc2 and long-castle attacking plans.
Quick recommendation
Use this page as a practical Janowski map. First understand the ...dxc4 and ...b5 threat, then decide whether you want the clean Exchange QGD structure, the Bf4 bishop-exchange route, or a long-castle kingside attack.
- Black's identity: a QGD surprise move that asks White to stop the c4-pawn grab.
- White's main answer: 4.cxd5 exd5, entering an Exchange QGD with ...a6 inserted.
- Black's proof: make ...a6 useful through ...b5, ...c6, ...c5 or queenside space.
- Replay focus: Solak, Wojtaszek, Mamedyarov, Nakamura, Giri, Wang Hao and sharp blitz tests.
QGD Janowski Adviser
Choose your side and problem. The adviser points to a named diagram and matching supplied replay.
Key diagrams and practice positions
Every diagram below uses a python-chess validated FEN from the stated example sequence. The board widget provides the computer-play option for the exact position.
Main answer: 4.cxd5 exd5
White usually exchanges first. That removes the immediate ...dxc4 and ...b5 pawn-grab threat and turns the game into a Carlsbad-style Exchange QGD with Black already committed to ...a6.
Example sequence: d4 d5 c4 e6 Nc3 a6 cxd5 exd5
Bf4 and ...Bd6 exchange plan
After Bf4, Black often meets the bishop with ...Bd6. Exchanging on d6 gives White a clean structure, while Black hopes the a6-b5 space plan gives counterplay.
Example sequence: d4 d5 c4 e6 Nc3 a6 cxd5 exd5 Bf4 c6 e3 Bd6 Bxd6 Qxd6
Nf3 and Bg5 development route
White can develop naturally with Nf3 and Bg5. Black usually continues ...Be7, ...c6, ...Nbd7 and chooses between solid development or kingside counterplay.
Example sequence: d4 d5 c4 e6 Nc3 a6 cxd5 exd5 Nf3 Nf6 Bg5 Be7 e3 c6 Qc2 Nbd7
The threat: ...dxc4 and ...b5
This is the warning line if White does not clarify the centre. Black captures on c4 and supports the pawn with ...b5, which is the whole reason 4.cxd5 is so common.
Example sequence: d4 d5 c4 e6 Nc3 a6 Nf3 dxc4 e4 b5
Long-castle kingside storm
Many Janowski games become Exchange-QGD attacks: White castles long, plays h4-h5 or g4-g5, and tries to punish Black before the queenside space plan arrives.
Example sequence: d4 d5 c4 e6 Nc3 a6 cxd5 exd5 Nf3 c6 Qc2 Nf6 Bg5 Be7 e3 Nbd7 Bd3 O-O h4 Re8 g4
Black counterplay with ...c5 and ...b5
Black often waits until White has shown the setup, then hits with ...c5 or expands with ...b5. The a6 move is useful only if it supports a real queenside plan.
Example sequence: d4 d5 c4 e6 Nc3 a6 cxd5 exd5 Bf4 c6 e3 Bd6 Bxd6 Qxd6 Bd3 Ne7 Qc2 Bg4 Nge2 Bxe2 Bxe2 Nd7 O-O-O O-O Bd3 Kh8 Kb1 Rac8 h4 b5
Tactical resource: pressure on f4 and e3
The Janowski is not just a waiting move. If White overextends, Black can generate tactics with ...g5, ...gxf4 and rook activity, as several supplied model games show.
Example sequence: d4 d5 c4 e6 Nc3 a6 cxd5 exd5 Bf4 Nf6 e3 Bd6 Qf3 Be6 Bd3 c5 Bxd6 Qxd6 dxc5 Qxc5 Qf4 Nc6 Nge2 Rd8 Rd1 O-O O-O Bg4 f3 Bc8 Nd4 Rfe8 Rfe1 Ne5 Nb3 Qe7 Bf1 b5 Nd4 Nh5 Kh1 b4 Nb1 g5
Variation map
3...a6 threat
Black threatens ...dxc4 and ...b5, trying to hold the extra pawn.
4.cxd5
White's main practical answer removes the pawn-hold idea and enters an Exchange QGD.
Bf4 and ...Bd6
A common bishop-exchange structure where Black aims for later queenside play.
Long-castle attack
White often plays Qc2, Bd3, O-O-O and h-pawn or g-pawn pressure.
Plans for White
- Play 4.cxd5: remove the immediate ...dxc4 and ...b5 pawn-hold threat.
- Choose Bf4: invite ...Bd6 and steer into a clean Exchange QGD structure.
- Choose Nf3 and Bg5: develop naturally and keep normal QGD pressure.
- Castle long only with purpose: Qc2, Bd3, h4 and g4 can become a real attack.
- Watch ...c5: Black wants to prove ...a6 by gaining queenside or central activity.
Plans for Black
- Make ...a6 useful: follow with ...dxc4 and ...b5 if White allows it.
- After 4.cxd5: switch to solid Exchange QGD play with ...c6, ...Nf6 and ...Bd6.
- Trade on d6 when useful: after Bf4, ...Bd6 can simplify White's attacking bishop.
- Use ...b5 or ...c5: do not let White attack for free on the kingside.
- Look for tactics: pressure on f4, e3 and central files can punish overextension.
Replay Lab: supplied QGD Janowski games
Choose a model game. The replay uses only the supplied Janowski PGNs, stripped to the seven mandatory replay tags and annotation-free move text.
Model-game guide
Solak vs Miladinovic
A long-castle attacking model with h-pawn pressure and a kingside race.
Wojtaszek vs Morozevich
A clean Bf4 and ...Bd6 structure where White squeezes after the bishop exchange.
Mamedyarov vs Ponomariov
A sharp Black win showing counterplay against a kingside pawn storm.
Shomoev vs Inarkiev
A tactical warning model where Black hits f4, e3 and central coordination.
Study path
- Start with the Janowski starting position and explain the ...dxc4 plus ...b5 threat.
- Study 4.cxd5 exd5 as White's main practical answer.
- Study the Bf4 and ...Bd6 exchange structure.
- Study one long-castle kingside storm and one Black counterplay model.
- Finish with the tactical resource diagram so you remember that the line can become concrete.
Related Queen's Gambit guides
QGD Janowski Variation FAQs
Basics and move order
What is the QGD Janowski Variation?
The QGD Janowski Variation is the Queen's Gambit Declined line 1.d4 d5 2.c4 e6 3.Nc3 a6. Black uses ...a6 to prepare ...dxc4 followed by ...b5, so White usually clarifies the centre with cxd5. Start with the Janowski starting position diagram to see why the a-pawn move matters.
Why does Black play 3...a6 in the Queen's Gambit Declined?
Black plays 3...a6 to threaten ...dxc4 and ...b5, trying to hold the extra c4-pawn. The move also prepares queenside expansion without committing the kingside knight yet. Use the threat: ...dxc4 and ...b5 diagram to see the point immediately.
What is the main move order of the Janowski Variation?
The main move order is 1.d4 d5 2.c4 e6 3.Nc3 a6 4.cxd5 exd5. White normally exchanges first because allowing ...dxc4 and ...b5 can give Black a useful extra-pawn grip. Use the main answer: 4.cxd5 exd5 diagram as the page anchor.
Why does White usually play cxd5 against the Janowski Variation?
White usually plays cxd5 because it removes Black's direct ...dxc4 and ...b5 plan. After 4.cxd5 exd5, the game becomes an Exchange QGD where ...a6 is useful but not immediately forcing. Compare the main answer: 4.cxd5 exd5 diagram with the threat: ...dxc4 and ...b5 diagram.
Is the Janowski Variation sound?
The Janowski Variation is sound as a practical Queen's Gambit Declined move order. Its value comes from asking White to react to the c4-pawn threat before settling into normal development. Use the adviser to choose whether you want the Exchange structure, the Bf4 route, or the sharper kingside-storm route.
Is the Janowski Variation good for club players?
The Janowski Variation is good for club players who want a simple QGD surprise with a clear early threat. It is easier to understand when you remember that ...a6 is useful only if Black follows with ...dxc4, ...b5, ...c6, or ...c5 ideas. Start with the Janowski starting position diagram and then load a model replay.
White plans
What is White's safest reply to 3...a6?
White's safest reply is 4.cxd5 exd5, removing Black's direct pawn-grab idea. White can then choose Bf4, Nf3 and Bg5, or Qc2 with long-castle attacking plans. Use the main answer: 4.cxd5 exd5 diagram before choosing a replay.
Can White play Bf4 against the Janowski Variation?
White can play Bf4 after 4.cxd5 exd5, and it is one of the most common practical setups. Black often replies with ...c6 and ...Bd6, asking whether White wants to exchange bishops. Use the Bf4 and ...Bd6 exchange plan diagram for this branch.
Can White play Nf3 and Bg5 against the Janowski Variation?
White can play Nf3 and Bg5 after the early exchange on d5. This setup keeps normal Queen's Gambit Declined pressure while Black develops with ...Be7, ...c6 and ...Nbd7. Use the Nf3 and Bg5 development route diagram to study the structure.
Can White castle long in the Janowski Variation?
White can castle long in many Janowski structures, especially when Qc2, Bd3 and h4-h5 or g4-g5 are available. The plan is dangerous but also commits White to a race against Black's queenside counterplay. Use the long-castle kingside storm diagram before loading Solak vs Miladinovic or Mamedyarov vs Ponomariov.
Can White ignore the ...dxc4 and ...b5 threat?
White can ignore the threat, but it gives Black the exact Janowski idea: ...dxc4 followed by ...b5. That may force White to spend tempi recovering the pawn or proving compensation. Use the threat: ...dxc4 and ...b5 diagram as the warning position.
What is White's attacking idea with h4 and h5?
White's h4 and h5 idea is to gain kingside space while Black is spending time on ...a6, ...b5 or ...c6. If White castles long, the h-pawn can become part of a direct attacking race. Use the long-castle kingside storm diagram and then load Wang Hao vs Dubov.
Black plans and counterplay
What is Black's main plan in the Janowski Variation?
Black's main plan is to use ...a6 as support for ...dxc4 and ...b5 or later queenside expansion. If White prevents that with cxd5, Black usually plays ...c6, ...Bd6, ...Nf6 and sometimes ...b5 or ...c5. Use the black counterplay with ...c5 and ...b5 diagram to connect the ideas.
When should Black play ...dxc4 in the Janowski Variation?
Black should play ...dxc4 when White has not exchanged on d5 and when ...b5 can help hold the pawn. If White has already played cxd5, Black normally switches to Exchange-QGD development instead. Use the threat: ...dxc4 and ...b5 diagram to judge the timing.
Why is ...b5 important in the Janowski Variation?
The move ...b5 is important because it justifies ...a6 by supporting a pawn on c4 or gaining queenside space. Without ...b5 or ...c5, ...a6 can become only a waiting move. Use the black counterplay with ...c5 and ...b5 diagram to see the active version.
Can Black play ...Bd6 against Bf4?
Black can play ...Bd6 against Bf4 and often welcomes the bishop exchange. After Bxd6 Qxd6, Black keeps a solid structure and can later expand with ...b5 or hit the centre with ...c5. Use the Bf4 and ...Bd6 exchange plan diagram to train the setup.
Can Black play ...c5 in the Janowski Variation?
Black can play ...c5 when the centre is ready for contact and the queenside pieces support the break. The move challenges White before a smooth kingside attack arrives. Use the black counterplay with ...c5 and ...b5 diagram to study the timing.
What are Black's tactical chances in the Janowski Variation?
Black's tactical chances often come from pressure on f4, e3, and the central files after White overextends. Moves like ...g5, ...Rfe8 and ...Ne5 can punish loose coordination. Use the tactical resource: pressure on f4 and e3 diagram before loading Shomoev vs Inarkiev.
Replay and training
Which replay best shows White's long-castle attack?
Solak vs Miladinovic best shows White's long-castle attack with h-pawn pressure in the supplied Janowski PGNs. It demonstrates how quickly White can switch from a quiet Exchange QGD into a kingside race. Load Solak vs Miladinovic after studying the long-castle kingside storm diagram.
Which replay best shows the Bf4 and ...Bd6 structure?
Wojtaszek vs Morozevich is the clearest supplied replay for the Bf4 and ...Bd6 structure. It shows the bishop exchange, queenside expansion, and White's long-term grip on the c-file and kingside. Load Wojtaszek vs Morozevich after studying the Bf4 and ...Bd6 exchange plan diagram.
Which replay best shows Black winning with Janowski counterplay?
Mamedyarov vs Ponomariov and Nakamura vs Gelfand are strong supplied examples of Black winning with Janowski counterplay. They show that Black can survive the early Exchange structure and fight back with central and kingside activity. Load Mamedyarov vs Ponomariov after studying the black counterplay with ...c5 and ...b5 diagram.
Which replay best shows a tactical trap for White?
Shomoev vs Inarkiev is the best supplied replay for a tactical warning because Black generates a sharp blow against White's f4 and e3 coordination. It is a reminder that the Janowski can become concrete very quickly. Load Shomoev vs Inarkiev after studying the tactical resource: pressure on f4 and e3 diagram.
Which replay best shows modern attacking treatment for White?
Wang Hao vs Dubov is a good supplied replay for modern attacking treatment with h4-h5 and kingside pressure. White combines a restrained Exchange structure with direct pawn play. Load Wang Hao vs Dubov after studying the long-castle kingside storm diagram.
How should I train the Janowski Variation in 10 minutes?
Train the Janowski in 10 minutes by studying the starting position, the 4.cxd5 exd5 answer, and the ...dxc4 plus ...b5 threat. Then choose one Bf4 replay and one kingside-storm replay. Use the adviser to select the matching diagram and model game.
What should I remember most about the Janowski Variation?
Remember that 3...a6 is not random: it threatens ...dxc4 and ...b5, so White normally plays cxd5 first. After that, the game becomes an Exchange QGD where Black must prove that ...a6 helps queenside counterplay. Use the Janowski starting position diagram, then test the idea in the Replay Lab.
Train the 3...a6 Queen's Gambit Declined
Start with the Janowski starting position, compare the 4.cxd5 answer with the ...dxc4 and ...b5 threat, then test your branch in the Replay Lab.
Study opening principles with practical Queen's Gambit examples
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